Re: [PATCH 5/7] i2c: rcar: : use proper DMAENGINE API for termination
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: 2021-06-23 14:08:21
Also in:
linux-mmc, linux-renesas-soc, lkml
Is this safe? The driver is not using a threaded irq, and DMA termination may be called from the interrupt handler.
You are right, this will not work. Not my best day today, I overlooked it for i2c-rcar and lost the note pointing out the same issue for stm32f7 :(
Have you tried triggering DMA termination, with lockdep enabled?
Nope. As the code didn't show signs of async nature, I assumed sync was desired anyhow.
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